Nano-Hydroxyapatite Airborne-Particle Abrasion System as an Alternative Surface Treatment Method on Intraorally...

Area of Science:

• Biomaterials Science
• Dental Implantology
• Surface Chemistry

Background:

• Peri-implantitis poses a significant challenge in dental implantology.
• Effective decontamination of titanium implant surfaces is crucial for successful reosseointegration.
• Current methods for treating peri-implantitis have limitations in fully restoring surface integrity.

Purpose of the Study:

• To evaluate the efficacy of a nano-hydroxyapatite powder decontamination method on intraorally contaminated titanium discs.
• To compare the nano-hydroxyapatite method with existing decontamination techniques for peri-implantitis treatment.
• To assess the impact of different treatments on titanium surface characteristics and wettability.

Main Methods:

• Titanium discs were contaminated and divided into groups treated with: titanium hand curette, ultrasonic scaler (with/without H2O2), short-term (30s) or long-term (120s) nano-hydroxyapatite airflow, or Er:YAG laser.
• Control groups included a contaminated disc (negative) and a sterile disc (positive).
• Surface analysis employed scanning electron microscopy, energy-dispersive x-ray spectroscopy, and dynamic contact angle analysis.

Main Results:

• The long-term nano-hydroxyapatite airflow group exhibited the lowest carbon atom percentage, indicating superior decontamination.
• Nano-hydroxyapatite airflow (both short and long-term) and laser treatments resulted in the lowest contact angles, signifying enhanced wettability.
• Surface analysis revealed significant differences in elemental composition and surface energy across treatment groups.

Conclusions:

• Nano-hydroxyapatite airborne-particle abrasion and Er:YAG laser treatments are effective in detoxifying and improving contaminated titanium surfaces.
• These advanced methods show potential for enhanced reosseointegration in the context of peri-implantitis treatment.
• The findings suggest that nano-hydroxyapatite decontamination offers a viable alternative to conventional methods.